Engine-stop.



No. 884,455. 'PATENTEDQ APR. 14, 1908. -H. 'BLANGK 4 L. E. BEGKERDITE.

ENGINE STOP.

APPLICATION FILED 4114.9, 1907.

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. gg MZI v 1 PATENTED APR. 14, 1908. H. BLANGK 60 L. E. BBOKERDITE.

ENGINE STOP.

APPLICATION FILEDAUG. 9, 1907.

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UNITED sT s PATENT orrron.

HENRY BLAN OK, OF

PHOENIX, ARIZONA TERRITORY, AND LAWRENCE E. BEOKERDITE, OF

MARSI-IFIELD, MISSOURI.

ENGINE-STOP.

Specification of Letters Patent.

Patented April 14, 1908.

Application filed August 9, 1907. Serial No. 387,778.

To all whom it may concern:

Be it known that we, HENRY BLANCK and LAwRENoE E. BECKERDITE, citizens of the United States, and residents, respectively, of Phoenix, county of Maricopa, Territory of Arizona, and Marshfield, county of Webster, State of Missouri, have invented certain new and useful Improvements in Engine-Stops, of which the following is a specification.

Our invention relates to engine stops.

The object of the present invention is the provision. of a novel vmechanical device adapted to be set into operation by an ordinary steam engine governor when the en gine begins to race which will immediately act to automatically close the governor valve and shut off the steam supply but will only be acted upon under abnormal conditions of running so that when. the engine is operating at its predetermined speed, or within desirable limits, the device Will not be brought into operation.

The invention is set forth fully hereinafter and its novel features are recited in the appended claims.

In the accompanying drawings z Figure 1 illustrates the device in use with an ordinary governor and a governor valve which closes by the upward movement of its stem; Figs. 2, 3, and 4 are details of parts of the device; Figs. 5 and 6 are views showing the invention applied to a governor valve which closes by the downward movement of its stem; and Fig. 7 is a detail view of a part of the invention.

The numeral 1 designates the belt which drives an ordinary ball governor 2 which is connected at 3 to the stem 4 of a governor valve 5, said stem being provided with a collar 6.

The numerals 7 and S (Fig. 7) designate plates which may be connected to any desired support which form a part of, or are attached to bars 9. Pivoted on a bolt 10 which is connected to the bars 9 and located between said bars, is a drop lever. 11 which has an adjustable weight 12. This leveris provided with. a downwardly turned end or arm 13, the edge of the lever being shown in Fig. 3. Referring to Figs. 1 and 4, there is shown a toggle-lever composed of the parts 14 and 15 which are pivoted together by a bolt 16. The member 1.4 has an end 17 which overhangs an opening in the other member 15, permitting the toggle-lever to break upwardly only. Holes 18 provide means for the insertion of a pin to lock the joint of the toggle-lever to prevent action of the device.

The toggle-lever is provided with a fork 19 on the member 15 which straddles the lever 11 and is pivoted thereto at 20, the member 14 being pivoted to and located between the bars 9 and 21. A kicker lever (Fig. 2) is pivoted at 23 to the arm 13 and it is provided with forks 24 and 25 at its opposite ends, fork 24 straddling the stem 4 below the collar 6, while fork 25 is bent upwardly and straddles the lever 11 just below the bar 15 of the toggle-lever, a bolt or pin 26 being provided so that the fork 25 cannot drop below the lever 11. A chain 27 limits the amount of drop of the lever 11.

Assuming that the governor belt 1 breaks or slips and the governor arms 2 dro before the engine can race, the collar 6 wi engage the fork 24, pressing it downwardly. The lever 22 turning on the pivot 23 but a slight distance will cause the pin 26 to bear against the member 15, forcing it upwardly and causing the joint of the'toggledever to break upwardly, whereupon the drop lever 11 will be free to tilt, the weight 12 moving downward, which will throw the fork 24 upwardly and force the valve 5 closed, where it will remain shutting off the steam to the engine until the device is reset by hand on the resumption of operation of the governor.

In Figs. 5 and 6, the same principle is employed but the parts are arranged upside down as regards their positions in Fig. 1 and a spring may be used which will act in the direction shown by the arrow 30, the fork 24 being located above the collar 6 because the governor valve 5'cl0ses downwardly instead of upwardly. If the stem 4 rises too high on account of breakage or slippage of the belt 1, the toggle-lever is broken and the stem 4 forced downwardly by the weight 12 or spring 30, as shown in Fig. 6.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is

1. In an engine stop, the combination with a toggledever, of a drop lever ada ted to normally maintain the toggle-lever in extended instance in the presence of two subscribing witnesses.

HENRY BLANCK. LAWRENCE E. BECKERDITE.

Witnesses to signature of Henry Blanck:

W. H. HALL, J. B. DOUGHERTY. Witnesses to signature of Lawrence E. Beckerdite C. I. WALKER, N. O. BRANNOCK. 

